DE102019106251B4 - Discharge device for atomizable fluid - Google Patents

Abstract

Discharge device for an atomizable fluid, comprising a receiving element (14) with at least one receiving space (44) for the fluid, a carrier body (12) on which a discharge opening (22) is formed, a fluid channel through which the fluid from the receiving space ( 44) can be conveyed to the discharge opening (22), an atomization space (66), which lies between the discharge opening (22) and the fluid channel and in which an atomization body is arranged and its peripheral surface (72) and its end face facing away from the fluid channel of wall sections of the Carrier body (12) are formed, and an actuating device, upon actuation of which fluid is discharged via the discharge opening (22), characterized in that connecting channels (74) are formed on the circumferential surface of the atomization chamber (66), through which the fluid when actuated the actuating device flows to the discharge opening (22), and that the atomizing body kantenfr on its circumference in the circumferential direction egg is trained.

Description

The invention relates to a discharge device for an atomizable fluid, in particular for a medicament and / or a biotec product, with the features of the preamble of patent claim 1.

Such a device is from the document EP 2 484 454 B1 known and comprises a receiving element in which a receiving space for a fluid is formed and which represents a trigger or an actuating device of the discharge device, which is displaceably mounted on a carrier body. The carrier body has a nozzle insert with a discharge opening through which the fluid can be applied. In addition, a fluid channel is formed, via which the fluid is transported from the receiving space to the discharge opening when the actuating device is actuated. For atomization, an atomization chamber is provided upstream of the discharge opening, in which an atomization body is arranged, which is designed in the manner of a hexagonal prism. When the actuating device or the receiving element is actuated, the fluid is transported along the circumferential surfaces of the atomizing body and discharged from the discharge opening in an atomized manner. However, the quality of the atomization does not meet high standards.

From the pamphlet DE 10 2014 003 622 A1 a disposable dispenser is known, which has a receiving element with a receiving space for a fluid, a carrier body on which a discharge opening is formed, a fluid channel through which the fluid can be conveyed from the receiving space to the discharge opening, an atomization space between the discharge opening and the Fluid channel is located and in which an atomizing body is arranged and whose peripheral surface and whose end surface facing away from the fluid channel are formed by wall sections of the carrier body, and comprises an actuating device, upon actuation of which fluid is discharged via the discharge opening. The atomizing body has a hexagonal outline, so that connecting channels are arranged between the circumferential surface of the atomizing space and the atomizing body, via which the fluid flows to the discharge opening when the actuating device is actuated.

The invention is based on the object of creating a discharge device of the type mentioned in the introduction, with which an optimized atomization of the fluid is possible.

According to the invention, this object is achieved by the discharge device having the features of claim 1.

In the discharge device according to the invention, the peripheral surface of the atomization space in which the atomization body is arranged forms connecting channels through which the fluid flows to the discharge opening when the actuating device is actuated. The connecting channels, which can be designed as grooves in the wall that radially delimits the atomization space and can have a rectangular cross section, enable a defined fluid transport along the atomization body to the discharge opening.

The discharge device according to the invention can in particular be used to apply a drug or a Biotec product into the nose of a person or also to apply a drug or a Biotec product to the pharynx or the skin of a person or animal. In principle, the discharge device according to the invention is suitable for a single or multi-component system which is to be subjected to atomization or crumbling during application.

In order to further improve the atomization properties of the discharge device according to the invention, in a preferred embodiment the connecting channels each merge into a cyclone channel which is formed on the end face or end wall of the atomization chamber and opens into a common annular chamber which surrounds the discharge opening. A cyclone channel is to be understood as meaning a channel which, due to its course, in particular due to its curved course and its opening into the annular space, causes swirling of the fluid flowing through the cyclone channel. The cyclone channel is, in particular, a groove that is formed on the end wall. The annular space is formed by a circular depression or recess in the end wall.

In order to further intensify the swirling of the fluid, the cyclone channels in an advantageous embodiment of the discharge device according to the invention each have a tangential course in relation to the discharge opening. The axis or center line of the cyclone channel does not intersect the discharge opening. Rather, it opens, offset to the discharge opening, into the annular space which engages around or surrounds the discharge opening.

In the case of the discharge device according to the invention, the atomizing body is formed without edges on its periphery in the circumferential direction. The atomizing body thus forms with its peripheral surface a boundary surface of the connecting channels, which are formed on the peripheral surface of the atomization chamber, and with its end face preferably a boundary surface of the at least one cyclone channel and the annular space, which are formed on the end wall of the atomization chamber. The atomizer body is apart from the Areas of the connecting channels, the cyclone channels and the annular space, in particular arranged in a form-fitting manner on the circumferential surface and on the end face of the atomization space.

In order to be able to ensure a positive fit of the atomizing body in the atomizing space, the atomizing body preferably has a conical surface on its circumference. The conical surface corresponds to a conical surface which forms the circumferential surface of the atomization space interrupted by the connecting channels.

Furthermore, the atomization body preferably has a smooth end face which rests against the end face of the atomization space, which is expediently interrupted by the cyclone channels and the annular space.

In a further advantageous embodiment of the discharge device according to the invention, the bottom surface of the atomizing body adjoins an intermediate space which is part of the atomizing chamber and is arranged downstream of the fluid channel.

When the fluid is applied, it flows out of the fluid channel into the intermediate space and from there via the connecting channels to the front or face of the atomizing body, in order to then be discharged from the discharge opening in atomized form.

The intermediate space can be defined by at least one spacer on which the atomizing body rests with its bottom surface.

Another special embodiment of the discharge device according to the invention comprises an insert which is inserted into the carrier body and forms a discharge means which, when the actuating means is actuated, moves into the receiving space of the receiving element in the manner of a displacement body.

The spacer, which defines the intermediate space which adjoins the bottom surface of the atomizing body, can be formed on the insert of the carrier body. In particular, the spacer can be designed in the form of at least one integrally formed knob on the end face of the insert.

In an advantageous embodiment of the discharge device according to the invention, the atomizing body is a head of a reducing rod which is arranged in the fluid channel. The reducing rod, together with the wall of the fluid channel, forms an annular channel through which the atomizable fluid is transported to the atomization chamber. The reducing rod also serves to ensure that as few residues of the fluid as possible remain in the discharge device after the discharge device has been used. The volume of the fluid channel is therefore limited by the reducing rod.

A special embodiment of the discharge device according to the invention is designed like a syringe, in which case the actuating element can be formed by the receiving element and the receiving element and the carrier body can be telescoped for discharging the fluid, i. H. the receiving element and the carrier body can be moved together.

Further advantages and advantageous configurations of the subject matter of the invention can be found in the description, the drawing and the claims.

• 1 eine perspektivische Ansicht einer Austragvorrichtung nach der Erfindung;
• 2 eine Explosionsdarstellung der Austragvorrichtung nach 1;
• 3 einen Längsschnitt durch die Austragvorrichtung nach 1;
• 4 eine perspektivische Ansicht eines Trägerkörpers der Austragvorrichtung;
• 5 eine Seitenansicht des Trägerkörpers;
• 6 einen Längsschnitt durch den Trägerkörper entlang der Linie VI-VI in 5;
• 7 eine Unteransicht des Trägerkörpers;
• 8 eine vergrößerte Schnittansicht eines Zerstäubungsraums und einer Austragöffnung des Trägerkörpers;
• 9 eine Innenansicht einer Stirnfläche des Zerstäubungsraums;
• 10 eine Seitenansicht eines Einsatzes des Trägerkörpers;
• 11 einen Längsschnitt durch den Einsatz;
• 12 eine Stirnansicht des Einsatzes;
• 13 eine perspektivische Ansicht eines drückerartigen Aufnahmeelements der Austragvorrichtung;
• 14 einen Längsschnitt durch das Aufnahmeelement nach 13; und
• 15 eine Seitenansicht eines Reduzierstabs der Austragvorrichtung.

An embodiment of a discharge device according to the invention is shown schematically simplified in the drawing and is explained in more detail in the following description. It shows

• 1 a perspective view of a discharge device according to the invention;
• 2 an exploded view of the discharge device according to 1 ;
• 3 a longitudinal section through the discharge device according to 1 ;
• 4th a perspective view of a carrier body of the discharge device;
• 5 a side view of the carrier body;
• 6th a longitudinal section through the carrier body along the line VI-VI in 5 ;
• 7th a bottom view of the carrier body;
• 8th an enlarged sectional view of an atomization chamber and a discharge opening of the carrier body;
• 9 an interior view of an end face of the atomization chamber;
• 10 a side view of an insert of the carrier body;
• 11 a longitudinal section through the insert;
• 12 an end view of the insert;
• 13 a perspective view of a pusher-like receiving element of the discharge device;
• 14th a longitudinal section through the receiving element 13 ; and
• 15th a side view of a reducing rod of the discharge device.

In the drawing is a discharge device 10 shown, which is designed like a syringe and can be used, for example, for the application of a liquid medicament or a liquid Biotec product into the human nose.

The discharge device 10 comprises a carrier body or syringe body 12 , a receiving element designed as a pusher 14th for the liquid drug, a rod-shaped insert 16 and a reducing rod 18th .

The one in the 4th to 9 Carrier bodies shown on their own and designed as a one-piece plastic injection-molded part 12 has a nozzle portion 20th on, the one in the direction of a discharge opening or nozzle at the end 22nd has tapered, largely elliptical cross-section and in the axial direction of a stepped passage 24 is interspersed.

The nozzle section 20th is at his the discharge opening 22nd remote end of a finger support plate 26th limited, the plane of which is at right angles to the longitudinal axis of the support body 12 is aligned and to which a guide wall 28 adjoins, which is in the axial direction of the support body 12 extends and has a substantially constant elliptical cross section.

In the passage 24 of the nozzle section 20th of the carrier body 12 is from that of the discharge opening 22nd facing away from in the 10 to 12 use shown in isolation 16 introduced and over a ring collar 30th jammed or latched with a cylindrical clamping portion 32 of the passage 24 corresponds.

The insert, also designed as a plastic injection-molded part 16 is in the manner of a tube with a one-sided through an end wall 36 closed end and has an axial channel 34 on that is different from the one in the passage 24 inserted end up to the front wall 36 extends and from which in one to the end wall 36 adjoining end area a transverse channel 38 branches off the peripheral wall of the insert 16 reaches through and two transverse openings of the insert 16 trains. On the scope of the effort 16 is also an annular lip 40 formed opposite the transverse channel 38 in the direction of the collar 30th is offset and on which the receiving element designed as a pusher 14th is led. On his the front wall 36 facing away from the face of the insert 16 knobs molded in one piece 42 on, which serve as spacers.

That in the 13 and 14th Receiving element shown on its own 14th represents, as already stated above, a pusher, through whose actuation the liquid medicament, which in a receiving space 44 of the receiving element 14th is held up on the use 16 from the nozzle-like discharge opening 22nd of the carrier body 12 can be applied.

The receiving element made in one piece from plastic 14th has a push plate on the front 46 on which the recording room 44 limited in the axial direction and to which an inner wall 48 which connects the recording room 44 limited in the radial direction and has a circular plan. In addition, the inner wall has 48 on its inside two sealing lips spaced apart in the axial direction 50 and 52 , the distance between which is slightly larger than the diameter of the transverse channel 38 of use 16 . About the sealing lips 50 and 52 of the receiving element 14th and the lip 40 of use 16 is the receiving element 14th slidable on the in the support body 12 used 16 guided. Here the sealing lips 50 and 52 of the receiving element 14th one hand and the lip 40 of use 16 on the other hand act as stops, which the user the respective position of the receiving element 14th compared to the use 16 can convey. The sealing lips 50 and 52 can when manually moving the receiving element 14th compared to the carrier body 12 or the use 16 the lip 40 of use 16 run over.

On the receiving element 14th is also an outer wall 54 shaped, which has an elliptical plan, the inner wall 48 encloses and represents a guide wall which, upon manual actuation of the receiving element 14th on the inside of the guide wall 28 of the carrier body 12 is guided or at a slight distance from the guide wall 28 is moved.

The in 15th Reducing rod shown on its own 18th the discharge device 10 includes a shaft 56 , which in the axial channel 34 of use 16 from that of the front wall 36 opposite side is introduced and has a diameter which is slightly smaller than the diameter of the axial channel 34 of use 16 .

Between the peripheral wall of the insert 16 and the shaft 56 of the reducing rod 18th This leaves an annular gap that forms a fluid channel.

At his the discharge opening 22nd facing end has the reducing rod 18th a head 58 on, the in the assembled state of the discharge device 10 with its bottom surface on the knobs forming the spacers 42 of use 16 is applied. The head 58 has a cylinder section 60 that is in a truncated cone section 62 passes over, which has a flat face 64 Has. The truncated cone section 62 forms a conical surface on the circumference.

The head 58 of the reducing rod 18th represents an atomizing body, which in an atomizing room 66 is arranged, which is from one to the discharge opening 22nd adjacent section of the passage 24 of the carrier body 12 is formed. The atomization room 66 is about a stage 68 from a central section 70 of the passage 24 Cut. In the installation position, the face of the insert strikes 16 to the step 68 on (cf. 3 ).

The atomization room 66 has a conical peripheral surface 72 , whose cone angle corresponds to the cone angle of the truncated cone section 62 Of the head 58 of the reducing rod 18th corresponds. The peripheral surface 72 is from the peripheral wall of the nozzle portion 20th educated. On the mission 16 the side facing away is the atomization chamber 66 from an end wall 73 of the nozzle section 20th of the carrier body 12 limited in which the discharge opening 22nd is trained.

To when the trigger-like receiving element is actuated 14th the liquid medicament to the discharge opening 22nd to promote are in the peripheral area 72 of the atomization room 66 three connection channels 74 each formed with a rectangular cross-section, which are offset from one another by about 120 ° and each in a cyclone channel 76 pass over to that of the front wall 73 formed end face of the atomization chamber 66 is formed. The cyclone canals 76 open into a common annulus 78 , the nozzle-like discharge opening 22nd grips around, and have with respect to the discharge opening 22nd each a curved tangential course (cf. 9 ). Starting from the annulus 78 the discharge opening tapers 22nd towards the outer end face of the nozzle section 20th in a conical manner. The conical surface of the head 58 and the face 64 Of the head 58 limit the connection channels 74 who have favourited cyclone canals 76 and the annulus 78 .

The discharge device described above 10 works in the manner described below.

Based on the in the 1 and 3 The delivery position shown can be achieved by exerting manual axial pressure on the receiving element 14th the latter in the direction of the nozzle section 20th of the carrier body 12 be relocated. The mission penetrates 16 with his the discharge opening 22nd remote end area in the manner of a displacement body into the receiving space 44 of the receiving element 14th one, the transverse channel 38 on that of the pusher plate 46 facing side of the sealing lip 50 is relocated. That in the recording room 44 Liquid medication held in reserve is displaced and via the transverse channel 38 and the annular gap between the shaft which forms the fluid channel 56 of the reducing rod 18th and the peripheral wall of the insert 16 in the atomization room 66 promoted and there by the space between the bottom surface of the head 58 of the reducing rod 18th and the face of the insert 16 via the connection channels 74 and the cyclone canals 76 in the annulus 78 promoted. In the annulus 78 the liquid medicament is swirled and then in atomized form via the discharge opening 22nd from the discharge device 10 applied.

List of reference symbols

10

Discharge device

12th

Carrier body

14th

Receiving element

16

commitment

18th

Reducing rod

20th

Nozzle section

22nd

Discharge opening

24

Passage

26th

Finger support plate

28

Guide wall

30th

Ring collar

32

Clamping section

34

Axial channel

36

Front wall

38

Transverse channel

40

lip

42

Nub

44

Recording room

46

Pusher plate

48

Inner wall

50

Sealing lip

52

Sealing lip

54

Outer wall

56

shaft

58

head

60

Cylinder section

62

Truncated cone section

64

Face

66

Atomization room

68

step

70

Middle section

72

Peripheral surface

73

Front wall

74

Connection channel

76

Cyclone canal

78

Annulus

Claims (12)

Discharge device for an atomizable fluid, comprising a receiving element (14) with at least one receiving space (44) for the fluid, a carrier body (12) on which a discharge opening (22) is formed, a fluid channel through which the fluid from the receiving space ( 44) can be conveyed to the discharge opening (22), an atomization space (66), which lies between the discharge opening (22) and the fluid channel and in which an atomization body is arranged and its peripheral surface (72) and its end face facing away from the fluid channel of wall sections of the Carrier body (12) are formed, and an actuating device, upon actuation of which fluid is discharged via the discharge opening (22), characterized in that connecting channels (74) are formed on the circumferential surface of the atomization chamber (66), through which the fluid when actuated the actuating device flows to the discharge opening (22), and that the atomizing body kantenf on its circumference in the circumferential direction rei is trained. Discharge device according to Claim 1 , characterized in that the connecting channels (74) each merge into a cyclone channel (76) which is formed on the end face of the atomization chamber (66) and opens into an annular chamber (78) which surrounds the discharge opening (22). Discharge device according to Claim 2 , characterized in that the cyclone channels (76) each have a tangential course in relation to the discharge opening (22). Discharge device according to one of the Claims 1 to 3 , characterized in that the atomizing body forms a conical surface on its circumference. Discharge device according to one of the Claims 1 to 4th , characterized in that the atomization body has a smooth end face (64) which rests against the end face of the atomization chamber (66). Discharge device according to one of the Claims 1 to 5 , characterized in that the peripheral surface of the atomization space (66) forms a conical surface which is interrupted by the connecting channels (74) and on which the atomization body rests flat. Discharge device according to one of the Claims 1 to 6th , characterized in that the bottom surface of the atomizing body adjoins an intermediate space which is part of the atomizing chamber (66) and is arranged downstream of the fluid channel. Discharge device according to Claim 7 , characterized in that the intermediate space is defined by at least one spacer on which the atomizing body rests with its bottom surface. Discharge device according to one of the Claims 1 to 8th , characterized in that an insert (16) of the carrier body (12) forms a discharge means which, when the actuating means is actuated, moves into the receiving space (44) of the receiving element (14) in the manner of a displacement body, preferably in the insert (16) the fluid channel is formed. Discharge device according to Claim 9 combined with Claim 8 , characterized in that the spacer is formed on the insert (16) of the carrier body (12). Discharge device according to one of the Claims 1 to 10 , characterized in that the atomizing body is a head (58) of a reducing rod (18) which is arranged in the fluid channel. Discharge device according to one of the Claims 1 to 11 , characterized in that the actuating element is formed by the receiving element (14) and the receiving element (14) and the carrier body (12) can be telescoped for discharging the fluid.

Images